RU1790649C - Hydraulic ripper - Google Patents

Abstract

Usage: excavation and movement of soil, can be used when laying electrical cables under water. SUMMARY OF THE INVENTION: A hydropropsator includes a hydraulic knife with a pump and a water conduit, cutting knives located along the water conduit on both sides of the water conduit and nozzles of the jet nozzle mechanism located between them. Each cutting knife is made in the form of separate wedge-shaped elements, the cutting edges of which are directed upwards. The axis of the nozzles is located in a plane passing through the cutting edges of the knives. This provides an increase in the efficiency of soil development, including related. 3 ill. with

Description

The invention relates to excavation and movement of soil, in particular to earth moving machines for special purposes, in particular to laying electric cables under water.

Known working body of the cable layer by and.with. USSR No. 798250 (E 02 F 5/10, H 02 G 1/10) containing a hydraulic knife with a pump and a water conduit.

In the pipeline of this device, one hole is located at the upper edge of the hydraulic knife, and the other at its lower edge and is facing in the opposite direction from the cutting part.

However, the working layer of the cable layer has the following drawback - it is difficult to develop bound soils and remove oncoming obstacles to the soil surface, since the hydraulic knife provides

only maintaining the suspension in the trench.

Closest to the technical nature of the present invention is a device for underwater excavation by AS USSR No. 1116127 (E 02 F 5/10, E 02 F 3/90, Н 02 G 1/10) containing a hydraulic knife with a pump and a water conduit.

The mechanical knife has cutting edges of the scrapers connected by a jumper and located in plan on both sides of the hydraulic knife, the cutting edges of the scrapers being parallel to each other, and the jumper is made in the form of two connected concave diaphragms installed along the water conduit, while the jet nozzle mechanism is made of several evenly mounted in front of and along the connection of the diaphragms of nozzles, the nozzles of which are oriented downward under a sharp

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angle to a plane passing through the cutting edges of the scrapers.

However, the device for underwater excavation of the soil also makes it difficult to develop bonded soils and remove oncoming obstacles to the soil surface due to the design of mechanical knives consisting of scrapers with cutting edges and a jumper made in the form of two concave diaphragms, due to the large preventing the advancement of the knife.

In some cases, it is necessary to lay the cable in bound soils, and therefore, devices that work more efficiently in these soils are necessary.

Improving the efficiency of soil development is achieved by adding the mechanical and hydraulic forces acting on the soil (knives and nozzles) due to the fact that the hydraulic spreader is equipped with an additional series of nozzles, and each cutting knife is made in the form of separate wedge-shaped elements, the cutting edges of which are directed upwards, the axes of the nozzles are located in a plane passing through the cutting edges of the knives.

The proposed design of the hydraulic sealer allows the preliminary development of a trench for subsequent laying of a cable or a flexible pipe in it in soils of various categories, including rocky and especially clogged, as well as to provide more efficient destruction or removal of oncoming obstruction, without the use of manual work by divers.

Comparison of the proposed hydraulic driver with the prototype, allowed to identify

The following distinguishing features:

- the hydraulic spreader is equipped with an additional series of nozzles, the axes of which are located in a plane passing through the cutting edges of the knives;

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- each cutting knife is made in the form of individual wedge-shaped elements, the cutting edges of which are directed upwards.

This allows us to conclude that the proposed technical solution is novel.

Figure 1 shows a General view of the hydraulic proportional; figure 2 is a section aa in figure 1; in Fig.3 - view B in Fig.1.

The hydraulic breaker contains a hydraulic knife 1 with a pump and a water conduit (not shown in the drawing). Cutting knives 2 and rows of nozzles 3 of the jet nozzle mechanism located between them are located along the water conduit on both sides of the water conduit, and the axis of the nozzles 3 are located in a plane passing through the cutting edges of the knives 2.

Hydropropor works as follows.

As a result of the action of water jets flowing out at high speed from nozzles 3 located on the cutting part of the hydraulic knife 1, the soil is suspended (pulp), which allows immersion in the soil to the required depth and translates forward.

When encountering an obstacle, the hydraulic driver is additionally provided with reciprocating motion in a vertical plane, as a result of which the mechanical knives 2 with cutting edges act on the obstacle. During the destruction process, cracks occur in the barrier, into which water flows, flowing out at a higher speed from the nozzles 3, which increases the effectiveness of the destructive action.

Due to the vertical movements of the hydraulic propeller, it is possible to remove oncoming obstacles to the soil surface by successively transferring it from one pair of mechanical knives to another.

Claims (1)

The claims A hydraulic feed driver, including a hydraulic knife with a pump and a water conduit, cutting knives located along the water conduit on its two sides and a row of nozzles of the jet nozzle mechanism located between them, characterized in that, for the purpose of To increase the efficiency of soil development, it is equipped with an additional series of nozzles, and each cutting knife is made in the form of separate wedge-shaped elements, the cutting edges of which are directed upwards, while the axis of the nozzles are located in a plane passing through the cutting edges of the knives.